Our web based email tool is expecting you to have a folder name called "Thrash". This might not be the case for brand new accounts but the solution is easy: just create that folder. You can do that following the steps:
1. Login into webmail (https://secure.leanservers.com/mail)
2. On the menu navigate to "Settings" then select the "Folder" tab (https://secure.leanservers.com/mail/?_task=settings&_action=folders)
3. At the bottom part create a folder named "Trash"
